Please use this identifier to cite or link to this item: http://repositorio.ufpa.br/jspui/handle/2011/3913
metadata.dc.type: Artigo de Periódico
Issue Date: Apr-1999
metadata.dc.creator: SILVA, Ana Paula Freitas da
PALMEIRA JUNIOR, Sebastião Ferreira
CONSERVA, Lucia Maria
GUILHON, Giselle Maria Skelding Pinheiro
Title: Two Dibenzylbutyrolactol derivatives and other chemical constituents from Aristolochia peltato-deltoidea
Citation: SILVA, Ana Paula Freitas da, et al. Two Dibenzylbutyrolactol derivatives and other chemical constituents from Aristolochia peltato-deltoidea. Journal of the Brazilian Chemical Society, São Paulo, v. 10, n. 2, p. 122-126, mar./abr. 1999. Disponível em: <http://www.scielo.br/pdf/jbchs/v10n2/a09v10n2.pdf>. Acesso em: 27 maio 2013. <http://dx.doi.org/10.1590/S0103-50531999000200009>.
metadata.dc.description.resumo: Do extrato hexânico das partes aéreas de Aristolochia peltato-deltoidea Hoehne (Aristolochiaceae) foram isolados duas novas lignanas epiméricas do tipo dibenzilbutirolactol, rel-(8R, 8 S, 9S)-3,4-dimetoxi-3 ,4 -metilenodioxi-9b-etoxi- e rel-(8R, 8 S, 9R)-3,4-dimetoxi-3 ,4 -metilenodioxi-9a-etoxi-lignanas-8.8 ,9.O.9 , além da neolignana benzofurânica eupomatenóide-7, a-tocoferilquinona, b-sitosterol e estigmasterol. Do extrato clorofórmico foram isoladas duas lignanas dibenzilbutirolactonas diasteroisoméricas: rel-(8R, 8 R)- e rel-(8R, 8 S)-3,4-dimetoxi-3 ,4 -metilenodioxi-9-oxo-lignanas-8.8 ,9.O.9 . A composição química das frações apolares do extrato hexânico também foi analisada por CG/EM. Dentre os componentes detectados, dez foram identificados. As estruturas dos compostos isolados foram elucidadas utilizando-se métodos espectrométricos.
Abstract: The hexane extract from the aerial parts of Aristolochia peltato-deltoidea Hoehne (Aristolochiaceae) afforded two new epimeric lignans of the type dibenzylbutyrolactol, rel-(8R, 8 S, 9S)-3,4-dimethoxy-3 ,4 -methylenedioxy-9b-ethoxy- and rel-(8R, 8 S, 9R)-3,4-dimethoxy-3 ,4 -methylenedioxy-9a-ethoxy-lignans-8.8 ,9.O.9 , besides a benzofuran neolignan, known as eupomatenoid-7, a-tocopherylquinone, b-sitosterol and stigmasterol. From the chloroform extract were isolated two diastereomeric dibenzylbutyrolactone lignans: rel-(8R, 8 R)- and rel-(8R, 8 S)-3,4-dimethoxy-3 ,4 -methylenedioxy-9-oxo-lignans-8.8 ,9.O.9 . Chemical composition analysis by GC/MS of the non polar fractions from the hexane extract was also carried out and ten components were identified. The structures of the isolated compounds were elucidated utilizing spectrometric methods.
Keywords: Análise química
Aristolochia peltato-deltoidea
Aristolochiaceae
Benzofuran neolignan
Dibenzylbutyrolactol lignans
A-tocopherylquinone
Ilha de Maçaranduba - PA
Pará - Estado
Amazônia brasileira
ISSN: 1678-4790
0103-5053
metadata.dc.rights: Acesso Aberto
Appears in Collections:Artigos Científicos - FAQUI/ICEN

Files in This Item:
File Description SizeFormat 
Artigo_TwoDibenzylbutyrolactolDerivatives.pdf44,79 kBAdobe PDFView/Open


This item is licensed under a Creative Commons License Creative Commons